Rotary washing-machine.



I'I. STITZEL. ROTARY WASHING MACHINE.

APPLICATION FILED-MAY 10, 1906.

Patented June 2 2, 1,909.

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' -ATT'D RN YS WITN ES 5 ES H. ST-ITZEL. ROTARY WASHING MACHINE. ArPLIoATIoN Hmm MAY .19, 1906.

Patented June 22, 1909.

ZSHEETS-SHEBT L WITN ESSES UNiTED STATES PATENT' OFFICE.

` HUGO STITZELOF ZURICLL SWITZERLAND.

ROTARY WASHING-MACHINE Specification of Letters Patent. i

Patented .rune 22, iooe.

Application led May 10, 1906. Serial No. 316,212.

, Improvements in or Relating to-Iotary lashing-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skille-d in the art to which it appertains to make and use the same.

The object of my invention is to produce an improved double drum washing machine which will have the advantage, characteristic of such machines, thatl the height of the water may be controlled by properly placing the inlet and outlet in the outer dru-m, and at the same time a machine in which the destruction of the clothes which is incident to their beating against the'perforated inner drum commonly used in such machines, is avoided. To this end I employ a closed outer drum of the construction commonly employed in double drum washing machines and I substitute for the perforated drum commonly used as the inner drum of such machines an inner drum having a generally smooth and imperforate wall carrying a few hollow ribs containing spraying holes for introducing the liquid into the inner drum and onto the clothes. The ends of the inner drum are open from the inner drum into the outer drum to establish communication between the inner drum and the outer drum, the clothes being held within the inner drum by screens supported near the two ends thereof. y

An embodiment of the invention is shown onathe accompanying drawing in which- Figure 1 is a longitudinal section on the line l-l of Fig. 2. Figs. 2 and 3 are cross sections on` the lines 2 2 and 3-3 respectively of Fig. l. Fig. l is a cross sectionon the line 4 4 of Fig. 2.

The inner washing drum a consists of a perfectly smooth non-perforated cylinder which is provided at a few places of itscircumference with hollow ribs ,b which are provided at the highest point with perforations c. These hollow ribs receive the washing liquid from the hollow spindles d through the hollow spokes ve of thewheel-likel drum heads. Owing to the lye or rinsing liquid being suppliedthrough both hollow spindles of the inner drum, the whole contents of the drum are moistened in a uniform manner. y

' One of the spokes in each head isnot hollow (Fig. 2) as at thispoint of the drum .the cover f is arranged so that a hollow rib b at that point would be in the way. The ribs b are formed as shownin Fig. 2, by forcing in or hammering in from the outside the middle of the wall of the drum, the hollow thus produced being ,covered out-v side by plates g.

The discharge of the dirty water is effected according tolthis invention, through the front or end walls of the drum, as already stated. In the construction shown 1n the drawing theV liquid Hows between the spokes of the ywheel-shaped drum heads and passes into the outer drum h from which it can be discharged lby means of a drain cock. In order to prevent the washing from being carried away during the -discharge of the dirty liquid, a sieve i is arranged in front of each wheel shaped drum head, and is held at a cert-ain distance from the drum head by means of ribs 7c on the spokes, and bythe flange n on the drumhead by means of which flange the peripheral edge of the -sieve or screen 'i is supported for the pur,-

pose of utilizing the whole area of the sieve.

Owing to the fact thatl the drum wall is tnot perforated, the 'articles' being washed are amply protected. The small spraying holes on the upper edge of the hollow ribs do not prevent favorable action as theribs themselves serve for raising the articles being washed` during the rotation of the drum,

and the articles then fall down from the ribs.

Having now particularly described and ascertained the nature of my said invention and in what manner the-same is to be performed, I declare,'that what I claim'is: l. A washing machine, comprlsmgi an outer closed casing, an inner revolving rum having perforated, hollow ribs at intervals o n its periphery for the introduction of the liquid, wheel-like heads to which the ends of the drum are secured and by which they are supported, hollow journals by means of which said heads are 'supported in the outer casing, and hollow spokes in the heads connecting the journals with the perforated ribs in the drum, the walls of the drum between the ribs being imperforate, and the ends of the drum having openings between the s okes of the head for the outlet of the liqui v l 2. A washing machine, comprising an outer closed casing, an inner revolving drum having perforated ribs at intervals on its inner periphery', wheel-like heads to which the ends of the drum are secured and by which they are supported, hollow journals supporting the heads in the outer casing, hollow spokes in the heads connecting thejournals withv the perforated ribs in the drum, the walls of the drum between the ribs being imperforate, and the ends of the drums being open between the spokes of the heads for the outlet of the liquid, and retioulated screens in the ends of the drum to prevent the goods from falling out.

3. In a double drum washing machine, an inner imperforate drum having hollow ribs provided with spraying holes arranged at l intervals on its eripliery and an open spider supporting sai inner drum in the outer drum, said spider' being made up of hollow radial arms sepa-rated by open spaces, said arms forming inlet pipes for the said hollow ribs, whereb the washing fluid sprayed into the inner rum from the hollow ribs flows freely between the arms of the spider, substantially as described.

In witness whereof I have hereunto set my hand in presence of two Witnesses.

HUGO STITZEL.

Witnesses:

FR. POHLMANN, T. WITZ. 

